/// <summary>
/// Append the key segment in the end of ODataPath, the method does not modify current ODataPath instance,
/// it returns a new ODataPath without ending type segment.
/// If last segment is type cast, the key would be appended before type cast segment.
/// </summary>
/// <param name="path">Path to perform the computation on.</param>
/// <param name="keys">The set of key property names and the values to be used in searching for the given item.</param>
/// <param name="edmType">The type of the item this key returns.</param>
/// <param name="navigationSource">The navigation source that this key is used to search.</param>
/// <returns>The ODataPath with key segment appended</returns>
public static ODataPath AppendKeySegment(this ODataPath path, IEnumerable <KeyValuePair <string, object> > keys, IEdmEntityType edmType, IEdmNavigationSource navigationSource)
{
var handler = new SplitEndingSegmentOfTypeHandler <TypeSegment>();
path.WalkWith(handler);
KeySegment keySegment = new KeySegment(keys, edmType, navigationSource);
ODataPath newPath = handler.FirstPart;
newPath.Add(keySegment);
foreach (var segment in handler.LastPart)
{
newPath.Add(segment);
}
return(newPath);
}
/// <summary>
/// Build a segment representing a navigation property.
/// </summary>
/// <param name="path">Path to perform the computation on.</param>
/// <param name="navigationProperty">The navigation property this segment represents.</param>
/// <param name="navigationSource">The navigation source of the entities targetted by this navigation property. This can be null.</param>
/// <returns>The ODataPath with navigation property appended in the end in the end</returns>
public static ODataPath AppendNavigationPropertySegment(this ODataPath path, IEdmNavigationProperty navigationProperty, IEdmNavigationSource navigationSource)
{
var newPath = new ODataPath(path);
NavigationPropertySegment np = new NavigationPropertySegment(navigationProperty, navigationSource);
newPath.Add(np);
return(newPath);
}
/// <summary>
/// Remove the key segment in the end of ODataPath, the method does not modify current ODataPath instance,
/// it returns a new ODataPath without ending type segment.
/// If last segment is type cast, the key before type cast segment would be removed.
/// </summary>
/// <param name="path">Path to perform the computation on.</param>
/// <returns>The ODataPath without key segment removed</returns>
public static ODataPath TrimEndingKeySegment(this ODataPath path)
{
var typeHandler = new SplitEndingSegmentOfTypeHandler <TypeSegment>();
var keyHandler = new SplitEndingSegmentOfTypeHandler <KeySegment>();
path.WalkWith(typeHandler);
typeHandler.FirstPart.WalkWith(keyHandler);
ODataPath newPath = keyHandler.FirstPart;
foreach (var segment in typeHandler.LastPart)
{
newPath.Add(segment);
}
return(newPath);
}